FN Archimer Export Format
PT J
TI Body reserves mediate trade-offs between life-history traits: new insights from small pelagic fish reproduction
BT 
AF BROSSET, Pablo
   LLORET, Josep
   MUNOZ, Marta
   FAUVEL, Christian
   VAN BEVEREN, Elisabeth
   MARQUES, Virginie
   FROMENTIN, Jean-Marc
   MENARD, Frederic
   SARAUX, Claire
AS 1:1,2;2:3;3:3;4:4;5:2;6:2;7:2;8:5;9:2;
FF 1:;2:;3:;4:PDG-RBE-MARBEC-L3AS;5:PDG-RBE-MARBEC-LHM;6:;7:PDG-RBE-MARBEC;8:;9:PDG-RBE-MARBEC-LHM;
C1 Univ Montpellier, IRD, IFREMER, UMR MARBEC,CNRS, F-34203 Sete, France.
   UM, IFREMER, UMR MARBEC,IRD, CNRS, F-34203 Sete, France.
   Univ Girona, Fac Sci, Girona, Spain.
   UM, UMR MARBEC, CNRS, IFREMER,IRD, F-34250 Palavas Les Flots, France.
   Univ Toulon & Var, Aix Marseille Univ, CNRS, MIO,IRD,UM 110, F-13288 Marseille, France.
C2 UNIV MONTPELLIER, FRANCE
   IFREMER, FRANCE
   UNIV GIRONA, SPAIN
   IFREMER, FRANCE
   IRD, FRANCE
SI PALAVAS
   SETE
SE PDG-RBE-MARBEC-L3AS
   PDG-RBE-MARBEC-LHM
   PDG-RBE-MARBEC
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-p187
   copubli-europe
   copubli-univ-france
IF 2.243
TC 52
UR https://archimer.ifremer.fr/doc/00353/46458/46233.pdf
LA English
DT Article
CR PELMED - PELAGIQUES MEDITERRANÉE
DE ;maternal effect;northwest Mediterranean;anchovy;sardine
AB Limited resources in the environment prevent individuals from simultaneously maximizing all life-history traits, resulting in trade-offs. In particular, the cost of reproduction is well known to negatively affect energy investment in growth and maintenance. Here, we investigated these trade-offs during contrasting periods of high versus low fish size and body condition (before/after 2008) in the Gulf of Lions. Female reproductive allocation and performance in anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) were examined based on morphometric historical data from the 1970s and from 2003 to 2015. Additionally, potential maternal effects on egg quantity and quality were examined in 2014/2015. After 2008, the gonadosomatic index increased for sardine and remained steady for anchovy, while a strong decline in mean length at first maturity indicated earlier maturation for both species. Regarding maternal effects, for both species egg quantity was positively linked to fish size but not to fish lipid reserves, while the egg quality was positively related to lipid reserves. Atresia prevalence and intensity were rather low regardless of fish condition and size. Finally, estimations of total annual numbers of eggs spawned indicated a sharp decrease for sardine since 2008 but a slight increase for anchovy during the last 5 years. This study revealed a biased allocation towards reproduction in small pelagic fish when confronted with a really low body condition. This highlights that fish can maintain high reproductive investment potentially at the cost of other traits which might explain the present disappearance of old and large individuals in the Gulf of Lions.
PY 2016
PD OCT
SO Royal Society Open Science
SN 2054-5703
PU Royal Soc
VL 3
IS 10
UT 000389241700009
DI 10.1098/rsos.160202
ID 46458
ER

EF